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Home Microbiology Bacteria Morphology Comments

  • Question
  • Genetic system is located in the prokaryotes in


  • Options
  • A. nucleoid
  • B. chromatin
  • C. nuclear material
  • D. all of these

  • Correct Answer
  • all of these 


  • Bacteria Morphology problems


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    • 1. Which of the following has peptidoglycan as a major constituent of cell wall?

    • Options
    • A. Gram-negative bacteria
    • B. Gram-positive bacteria
    • C. Fungi
    • D. None of these
    • Discuss
    • 2. Periplasm is

    • Options
    • A. the area between the inner and outer membranes of gram-negative bacteria
    • B. the area between the inner and outer membranes of Gram-positive bacteria
    • C. the interior portion of mitochondria
    • D. the area outside the cell membrane that is influenced by the polymers
    • Discuss
    • 3. Which of the following is true about cell wall of gram-positive bacteria?

    • Options
    • A. It consists of multiple layers
    • B. It is thicker than that associated with gram-negative bacteria
    • C. It contains teichoic acids
    • D. All of these
    • Discuss
    • 4. Peptidoglycan is also known as

    • Options
    • A. N-acetyl muramic acid
    • B. murein mucopeptide
    • C. N acetylglucosamine
    • D. mesodiaminopimetic acid
    • Discuss
    • 5. The protein from which hook and filaments of flagella are composed of, is

    • Options
    • A. keratin
    • B. flagellin
    • C. gelatin
    • D. casein
    • Discuss
    • 6. The cocci which forms a bunch and irregular pattern are

    • Options
    • A. Staphylococci
    • B. diplococci
    • C. Tetracocci
    • D. Streptococci
    • Discuss
    • 7. Which of the following bacteria dies quickly after drying?

    • Options
    • A. Treponema pallidium
    • B. Mycobacterium tuberculosis
    • C. Staphylococcus aureus
    • D. Pseudomonas aeruginosa
    • Discuss
    • 8. Pseudomonas aeruginosa forms a blue water soluble pigment called

    • Options
    • A. pyocyanin
    • B. chlororaphin
    • C. pyoverdin
    • D. ?-carotene
    • Discuss
    • 9. For the selection of lactobacilli present in cheddar cheese, the pH of the medium is maintained at

    • Options
    • A. 6.35
    • B. 5.35
    • C. 4.35
    • D. 5.75
    • Discuss
    • 10. A medium containing crystal violet dye plus sodium deoxycholate will allow

    • Options
    • A. gram (-)ve intestinal bacteria to grow
    • B. gram (+)ve intestinal bacteria to grow
    • C. aquatic bacteria to grow
    • D. none of these
    • Discuss


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